The angle of repose represent a balance between the driving force and resisting force. Which of the following is the resisting force?
A) inertia B) shear C) centrifugal D) gravity E) friction
E
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Rock through which ground water cannot run or flow is a(n) ________
A) phreatic layer B) aquifer C) aquiclude D) vadose layer E) groundwater layer
Which of the following describes the climate of city that has warm summers and mild winters (where the average temperature of the coldest month is above -3°C)?
A. Mediterranean (Cs) climate B. moist subtropical (Cfa) climate C. tropical wet and dry (Aw) climate D. moist continental (Dfb) climate
Plants that are allelopathic
A) have very sharp spines instead of leaves. B) cannot tolerate long periods of drought. C) produce flowers very rapidly after a rain event. D) are likely to be located away from other plants.
Blocks of bedrock that break loose and slide downslope are often called a(n) ________
A) slump B) rockslide C) mudflow D) earthflow